package com.java8.ch03;


//Demonstrate block scope.
public class Scope {

	public static void main(String[] args) {
		int x;//known to all code within main\
		x = 10;
		if (x == 10) {//start new scope
			int y = 20;//known only to this block
			//x and y both known here.
			System.out.println("x and y :" + x + " " + y);
			x = y * 2;
		}
		//y = 100;//Error! y not known here
		//x is still known here.
		System.out.println("x is " + x);
	}
	
}
